AppDelegate l WalkthroughView

Question

i can add WalkthroughView on UIViewController pages but how i can add WalkthroughView on appDelegate?

 override open func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)

    let defaults = UserDefaults.standard
    let hasViewedWalkthrough = defaults.bool(forKey: "hasViewedWalkthrough")

    if !hasViewedWalkthrough {
       //
        print("succes")
        //
       if let pageVC = storyboard?.instantiateViewController(withIdentifier: "WalkthroughViewController") as? WalkthroughViewController {
           present(pageVC, animated: true, completion: nil)
        }
   }
}

it's unclear what you're trying to do. You have to explain a bit more. Don't just dump code — mfaani, Jun 14 '18 at 13:45
@Honey i need to show instruction just for one time after install the app. — felon, Jun 14 '18 at 21:03

score 1 · Answer 1 · answered Jun 14 '18 at 13:15

Perhaps you mean one of the options?

class AppDelegate: UIResponder, UIApplicationDelegate {
    var window: UIWindow?

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey : Any]? = nil) -> Bool {

        let rootViewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "WalkthroughViewController")
        window = UIWindow(frame: UIScreen.main.bounds)

        window?.rootViewController = rootViewController
        window?.makeKeyAndVisible()

        return true
    }
}

Or:

class AppDelegate: UIResponder, UIApplicationDelegate {
    var window: UIWindow?

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey : Any]? = nil) -> Bool {

        DispatchQueue.main.asyncAfter(deadline: .now() + 0.4) {
            let viewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "WalkthroughViewController")
             window?.rootViewController?.present(viewController, animated: true, completion: nil)
        }

        return true
    }
}

second code worked but i need to show "WalkthroughView" just for one time. — felon, Jun 14 '18 at 13:22
Use bool flag in UserDefaults to check whether the screen or application was already running. Example: UserDefaults.standard.set(true, forKey: "FirstRun") after run ViewController, if UserDefaults.standard.bool(forKey: "FirstRun") == false { } to present ViewController — ViR, Jun 14 '18 at 13:30

score -1 · Answer 2 · edited Jun 14 '18 at 12:24

-1

You can use the app delegate for this

func application(_ application: UIApplication, didFinishLaunchingWithOptionslaunchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool

edited Jun 14 '18 at 12:24

RajeshKumar R

15,445
2
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70

answered Jun 14 '18 at 12:08

Sumit Singh

1

I think the question was **how** to do it in the app delegate. – Scriptable Jun 14 '18 at 12:34

AppDelegate l WalkthroughView

2 Answers2